Improvement in writing and drawing slates



C. C. SHEPHERD. Writing and Drawing Slate.

Patented Oct. 7,1879.

N. PETERS. FHOTO-LITHDGRAPHER, WASHINGTON. D C

UNITED STATES PATENT OFFICE.

CHARLES C. SHEPHERD, OF PASSAIC, NEW JERSEY.

IMPROVEMENT IN WRITING AND' DRAWING SLATES.

Specification forming part of Letters Patent No. 220,311, dated October7, 1879; application lcd August 27, 1879.

To all whom it may concern:

Be it known that I, CHARLES C. SHEPHERD, of Passaic, in the county ofPassaic and State of New Jersey, have invented an Improvement in Writingand Drawing Slates, of which the following is a specification.

Transparent slates have been used for copying, Writing, or drawing upona paper placed beneath the ground glass, and an opaque slate has beenheld in the same box or frame that receives the transparent slate.

My present invention relates to a transparent sla-te and an opaqueslate' mounted inthe same fra-me, and in line, or nearly so, with eachother, in -Combination with a flap, and with copy slips or sheets thatare held by such iap.

By this improvement the opaque slate can be used on either side forwritin g or drawing, and the glass slate can be used with either of thecopy-slips, the drawing being performed with a lead-pencil on thetransparent slate, or a soapfstonc or other pencil on the opaque slate,and the combined slate only occupies the size usual with school-slates,thus giving great facility to learners.

In the drawings, Figure 1 is a view of the slate at the side containingthe Hap, and Fig. 2 is a section of the slate.

The frame of the slate is made in any usual manner with the ends a, andsides b, and the groove within said frame receives the slates; butinstead of having one slate throughout I make use of the opaque slate cand transparent slate d. These are in the saine plane, or nearly so, anddo` not require any intervening frame or cross-bar; but such cross-barcan be introduced, if desired.

The flap c is hinged at i, and partially cov ers the smooth side of theground glass d, and there are small buttons o to hold the ap whenclosed.

The copy sheets or slips are of the same size as the transparent slate,or nearly so, as usual, and one side of each of said copy-sli ps isprinted upon with outline pictures or designs, to be copied withlead-pencil on the ground glass.

At the back of each copysheet designs, pictures, letters, or figures areprinted with a dark ground, having the lines the color ofthe paper; butthat printing only covers the portion of the sheet that is exposedbetween the edge of the iap and the opaque slate, so as to be in aposition for being copied upon the said opaque slate.

The flap is, preferably, a piece of cardboard or Wood, but it may be ofother material, or in the form of an open frame. The hinge is,preferably, a piece of muslin or tape.

I claim as my invention- The combination, with a slateframe, of atransparent slate and an opaque slate essentially in the same planewithin said frame, and a tlap to retain the copy-sheets against thetransparent slate, substantially as set forth.

Signed by me this 23d day of August, A. D. 1879.

CHAs. o. SHEPHERD.

Vitne'sses GEO. T. PINCKNHY, WILLIAM G. Mor'r.

